MTBE
Kress Municipal Water System
MTBE was used as gasoline oxygenation additive to boost the octane number. In 2005, MTBE was replaced by ethanol as a gasoline additive. MTBE causes cancers in rats.
30
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.640 ppb | 5 | 3 | ND - 1.44 ppb |
| 2019 | 0.694 ppb | 5 | 2 | ND - 1.76 ppb |
| 2020 | ND | 5 | 0 | ND |
| 2021 | 0.238 ppb | 5 | 1 | ND - 1.19 ppb |
| 2022 | 1.20 ppb | 5 | 3 | ND - 3.15 ppb |
| 2023 | 0.236 ppb | 5 | 1 | ND - 1.18 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 13 ppb
The EWG Health Guideline of 13 ppb for MTBE was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-18 | Q1802138001 | ND |
| 2018-05-17 | Q1820299002 | ND |
| 2018-05-17 | Q1820299003 | 0.940 ppb |
| 2018-08-01 | Q1830568001 | 0.820 ppb |
| 2018-10-09 | Q1840125001 | 1.44 ppb |
| 2019-01-24 | Q1903571003 | 1.76 ppb |
| 2019-04-09 | Q1914247002 | ND |
| 2019-04-09 | Q1914247003 | ND |
| 2019-07-09 | Q1942724002 | 1.71 ppb |
| 2019-10-29 | Q1974402001 | ND |
| 2020-01-16 | Q2001710003 | ND |
| 2020-04-08 | Q2014314001 | ND |
| 2020-04-08 | Q2014314006 | ND |
| 2020-07-23 | Q2028982002 | ND |
| 2020-11-12 | Q2044650001 | ND |
| 2021-02-09 | Q2103898003 | ND |
| 2021-04-20 | Q2110121008 | ND |
| 2021-04-20 | Q2110121010 | ND |
| 2021-08-05 | Q2120688001 | 1.19 ppb |
| 2021-10-14 | Q2128808001 | ND |
| 2022-01-13 | Q2201413002 | ND |
| 2022-04-07 | Q2210890002 | ND |
| 2022-04-07 | Q2210890004 | 2.15 ppb |
| 2022-08-15 | Q2223646001 | 3.15 ppb |
| 2022-10-18 | Q2231523002 | 0.690 ppb |
| 2023-01-19 | Q2302865002 | 1.18 ppb |
| 2023-04-05 | Q2312655001 | ND |
| 2023-07-31 | Q2330814004 | ND |
| 2023-07-31 | Q2330814006 | ND |
| 2023-11-06 | Q2347394001 | ND |